[GRASS-dev] how to represent an argument as a variable in a grass python command

[Anna Kratochvílová]

On Sun, Sep 2, 2012 at 11:04 PM, Michael Barton <Michael.Barton at asu.edu> wrote:
> I'm trying to do a script that calls g.copy
>
> I want the user to be able to select which type of data to copy. So instead
> of specifying:
>
> grass.run_command('g.copy', rast='%s,%s' % (input, output))
>
> I'd like to something equivalent to:
>
> grass.run_command('g.copy', '%s=%s,%s' % (datatype, input, output))
>
> where datatype is the form of grass data to copy (eg, rast, vect, etc)
>
> The way I'd like to do this doesn't work. So what is the correct syntax
> here?

Create a dictionary first:

dataType = 'rast'
params = {dataType: '%s,%s' % (input, output)}
grass.run_command('g.copy', **params)

Maybe someone comes up with something better but this works.

Anna


>
> Thanks
> Michael
>
> ____________________
> C. Michael Barton
> Director, Center for Social Dynamics & Complexity
> Professor of Anthropology, School of Human Evolution & Social Change
> Arizona State University
>
> voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
> fax:          480-965-7671 (SHESC),  480-727-0709 (CSDC)
> www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> grass-dev mailing list
> grass-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-dev